As shown in Fig. 4a, ARID1A or ARID1B mutations were associated with a higher TMB value (ARID1A: 16.2 versus 9.3, P = 0.001; ARID1B: 17.1 versus 9.4, P = 0.020) and a higher proportion of PD-L1-positive cells (ARID1A: 38.9% versus 12.9%, P = 0.040; ARID1B: 41.3% versus 12.4%, P = 0.020) in advanced NSCLC patients. The gene discussed is ARID1A; the disease is non-small cell lung carcinoma.